<template>
  <el-tabs v-model="editableTabsValue" type="card" closable @tab-remove="removeTab">
    <el-tab-pane v-for="(item, index) in editableTabs" :key="item.name" :label="item.title" :name="item.name">
      {{item.content}}{{index}}
    </el-tab-pane>
  </el-tabs>
</template>

<script>
export default {
  data () {
    return {
      editableTabsValue: '2',
      editableTabs: [{
        title: 'Tab 1',
        name: '1',
        content: 'Tab 1 content'
      }, {
        title: 'Tab 2',
        name: '2',
        content: 'Tab 2 content'
      }],
      tabIndex: 2
    }
  },
  methods: {
    addTab (targetName) {
      let newTabName = ++this.tabIndex + ''
      this.editableTabs.push({
        title: 'New Tab',
        name: newTabName,
        content: 'New Tab content'
      })
      this.editableTabsValue = newTabName
    },
    removeTab (targetName) {
      let tabs = this.editableTabs
      let activeName = this.editableTabsValue
      if (activeName === targetName) {
        tabs.forEach((tab, index) => {
          if (tab.name === targetName) {
            let nextTab = tabs[index + 1] || tabs[index - 1]
            if (nextTab) {
              activeName = nextTab.name
            }
          }
        })
      }

      this.editableTabsValue = activeName
      this.editableTabs = tabs.filter(tab => tab.name !== targetName)
    }
  }
}
</script>
<style scoped>
</style>
